2019 official latest Raspberry Pi 4 model B, it adopt 1.5GHz 64-bit quad-core CPU and Broadcom BCM2711. It is equipped with 2GB/4GB/8GB RAM, USB 3.0 port, 40 GPIO pins, Micro HDMI port, CSI camera port, DSI display port and Ethernet port. The difference is that 4B board possesses Bluetooth 5.0, adopt Type-C charging port and support Gigabit Ethernet. Most performance is better than 3B/3B . It can be used to create various smart robots, tablet PC or more DIY products.